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Security report for bsky.social

Partial score · DNS & email only

68/100

0–100, higher is better. How it is calculated

Scanned

This is an earlier scan of bsky.social. View the latest report
5 of 7 checks could not complete. The site may be unreachable or blocking automated scans, so the results below cover only what could be checked. Try a rescan later.

NIS2 and GDPR posture

NIS2 outside view
Not assessed
GDPR outside view
Not assessed

Both readouts depend on the site's pages, which could not be loaded in this scan.

Priority findings

1 finding rated critical or high in the checks that completed. Fix these first.

  1. Email security

    SPF, DKIM and DMARC stop others sending email that looks like it comes from your domain, a common route to phishing and invoice fraud.

    • Critical

      No email authentication configured

      Domain is vulnerable to email spoofing

      What to do: Implement SPF, DKIM, and DMARC immediately

Need hands-on remediation? Email guard@offseq.com

Keep watching bsky.social

Only DNS and email could be checked this time. Monitoring re-checks every day and emails you when something material changes.

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  • TLS certificates and expiry
  • DNS records
  • SPF, DKIM and DMARC
  • Security headers
  • GDPR and NIS2 posture
  • Exposed services
  • Third-party trackers
  • Security score drift

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Results by check

Each check with its score, findings and the evidence it collected.

How this score is calculated

The security score runs 0–100, higher is better. It is the plain average of the security checks that completed in this scan, each counted equally. A check that could not run is left out: it counts neither as a pass nor as a fail.

Counted in this score

Email security
60
DNS health
75
Average
68

Not counted

  • SSL/TLS: did not complete in this scan.
  • Security headers: did not complete in this scan.
  • Network security: did not complete in this scan.
  • GDPR outside view: did not complete in this scan.
  • NIS2 outside view: Re-weights evidence from the TLS, email, DNS, network and hygiene checks, so counting it would count that evidence twice. Shown on its own.
  • OffSeq Observations: An AI reading of the site, useful context but not reproducible evidence. Shown on its own.

Findings that cap the score at 49

Each of these is serious on its own, so while any is present the site cannot rate better than high risk, however good the other checks are.

  • The certificate is not trusted by browsers
  • The website is not served over HTTPS
  • A database, remote desktop, file-sharing or Telnet service is reachable from the internet
  • The page loads a script from a compromised source
  • The domain registration has expired
  • SPF authorises every server to send mail as the domain

Partial scans

When the site blocks Guard or most checks cannot run, the score covers only the checks that ran (usually DNS and email), is capped at 75 and is shown as partial, without a risk level.

Risk levels

  • Critical0–25
  • High26–49
  • Medium50–75
  • Low76–100

Technical appendix

Business context, site observations and technical notes gathered during the scan, and the standards behind each reference.

Business context

Business profile

Bluesky operates in the technology sector as a public benefit corporation, focusing on social networking with an open protocol approach. Its business model revolves around providing an open social platform and fostering a developer ecosystem with APIs and third-party clients. The company has strategic partnerships with domains like atproto.com and multiple alternative client apps, indicating a collaborative ecosystem. The platform is gaining media attention and positions itself as a user-first alternative to centralized social media. Revenue streams are not explicitly detailed but likely include platform services and developer engagement. The target audience includes social media users seeking privacy and control, as well as developers building social applications.

Security posture

The website demonstrates a good security baseline with HTTPS enforced and no exposed sensitive data. However, it lacks explicit security headers such as Content Security Policy, HSTS, and X-Frame-Options, which are best practices for web security. There is no visible security policy, incident response contact, or vulnerability disclosure program, which are important for transparency and rapid response to security incidents. The use of Google Tag Manager introduces moderate user tracking, but privacy compliance is weak due to missing privacy and cookie policies. Overall, the security posture is good but could be enhanced by adopting additional security headers and publishing clear security and privacy policies.

Recommendations

  1. Publish a comprehensive privacy policy and cookie policy with GDPR compliance details.
  2. Implement and disclose a security policy including incident response contacts.
  3. Add security headers such as Content Security Policy, HSTS, and X-Frame-Options.
  4. Create and publish a vulnerability disclosure policy or security.txt file.
  5. Enhance transparency around data collection and retention practices.
Site observations

Automated reading of the public site. Ratings are indicative.

Business

Company
Bluesky
Description
Bluesky is a social media platform aiming to build an open foundation for the social internet, focusing on user choice, creativity, and community.
Key services
Social networking, Open APIs for developers, Custom feeds and moderation tools, Shared identity across social internet
Content quality
excellent
Branding
consistent

Technology

Stack
React, Next.js, Google Tag Manager, Webfonts (woff2), SVG graphics
Frameworks
Next.js
Performance
fast
Mobile
excellent
Accessibility
good
SEO
good

Security

Observed score
85/100
Good practices seen
  • HTTPS enforced
  • No exposed sensitive data in HTML
  • No visible vulnerable libraries

Analytics and tracking

Services
Google Tag Manager
Tracking level
moderate
Privacy practices
poor

Advertising

Transparency
basic

Site quality

Design
excellent
User experience
excellent
Content relevance
excellent
Navigation
good
Professionalism
excellent
Trustworthiness
high

Key observations

  1. Website is fully accessible with rich content and professional design.
  2. No explicit privacy, cookie, or terms of service policies found on the about page.
  3. Contact information limited to email addresses; no phone numbers or physical addresses found.
  4. Strong emphasis on openness, developer ecosystem, and technical transparency.
  5. Use of modern web technologies and good mobile optimization.
  6. No visible security policy or incident response information.
  7. No vulnerability disclosure or security.txt file detected.
  8. Use of Google Tag Manager indicates some level of user tracking.
  9. No suspicious or malicious content detected.
Standards and sources

Reference chips under each finding point to the standard, regulation or specification the finding relates to. They are taken from the official datasets below and mapped conservatively: a finding with no defensible link shows none. NIS2 and GDPR references mark where a finding is relevant evidence, not a compliance verdict. Implementing Regulation (EU) 2024/2690 binds digital infrastructure and digital service providers; for other entities it is the most detailed public reading of the Article 21 measures. WCAG, EN 301 549, European Accessibility Act and Web Accessibility Directive references name the requirement an automated accessibility rule relates to; they are not a conformance verdict.

Retrieved 2026-10-25

Earlier scans of this domain

  1. 69/100Medium30 findingsView report
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